Sunday 13 November 2016

REASON FOR BLACK COLOUR OF TYRES

Why are the tyres of the car black? Why can't it be any other?




Although the natural colour of rubber is a milky white, the black colour we see is because of carbon black.Actually Carbon Black is not added as a coloring agent,it is a filler. 

Vulcanized rubber does not have very good wear resistance and hence a tire made of pure vulcanized rubber would wear out soon.
Carbon Black also increases the damping properties of rubber, thus transferring less shock loads to the automobile.
In addition to this Carbon Black is a good conductor of heat and would help conduct heat away from the surface with contact to the road and help maintain a healthy tire temperature.
An added bonus is that addition of carbon black increases the coefficient of friction with the road surface thus making it safer to drive.

8 comments:

  1. Its nice to see people sharing their knowledge . Thank u 😃

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  2. Won't black colour actually be absorbing more heat? The tyre would be cooler if it was white. Temperatures in most of India and some countries are already very high.

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    Replies
    1. First of carbon black is used so as to improve its wear resistance....
      By using it becomes black due to some chemical reactions....
      Due to black colour it helps to helps to distribute the heat so maintaining​ temperature....

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  3. Carbon black also will be used as antioxidant, so that, it can prevent the tire from oxidisation....

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